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Changes to Step #17

Edit by Kit —

Edit approved by Yuting Zhao

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-[* black] After cleaning, don't busy with the lithium battery, connect the power supply and see if the indicator light is on.
-[* red] Obviously, the motherboard still can't work normally. The indicator light is not bright. Check the current is about six milliamps. This is usually the case. The power chip is the most vulnerable. It seems that you need to re-disassemble the damaged components. You need to find the same. Model components are available...
-[* orange] However, it can't be found, it can be re-removed, the original part is re-planted and soldered, and it is luck. Here, for professionals, please refer to my suggestion at the end of the article~~~
+[* red] After cleaning, don't worry about the lithium battery yet. Connect the power supply and see if the indicator light is on.
+[* orange] The mainboard still needs work as the indicator light is not bright. Check the current is about 6mA. The usual case is that the power IC is the issue as it's the most fragile part of the board.
+[* orange] Remove the damaged components and locate identical replacements and resolder them in the same places. If not, unsolder and resolder, and see if it works. This step is for persons with experience in soldering. Otherwise, please refer to my recommendations at the end of the document.